First-round pick Hayden practices with a red jersey (updated)

Raiders first-round pick D.J. Hayden passed his team physical Friday morning and was on the field for the team’s first training camp practice in Napa on Friday.
You could tell it was him because he was wearing a red jersey among his defensive players’ black ones. As in no contact, like a quarterback.
“It’s been nine or ten months since he played football,” Oakland coach Dennis Allen said. “We’re not going to thrown him in the fire.”
Hayden is coming off two surgeries since he last played in November, and was involved in a collision at a University of Houston practice. The cornerback had life-saving surgery to repair a torn heart vein, and then missed all of the Raiders’ offseason workouts due to a follow-up surgery in May to clean out scar tissue in his abdomen.
“From a medical standpoint, we don’t seen any challenges,” Allen said.
While Hayden is off the Non Football Injury list, second-round pick Menelik Watson remains on the list with an undisclosed injury. Allen did say it was a recent injury.
Watson was on the side working with trainers, as was linebacker Miles Burris (knee).
Defensive tackle Pat Sims also didn’t practice and was seen on the stationery bike. Allen said his undisclosed injury was also recent.(update) Sims and Burris are on the active Physically Unable to Perform list, and can practice as soon as they are cleared.
Also, the Raiders worked out free agent center/guard Andre Gurode after practice on Friday. Gurode, 34, didn’t play at all for the Chicago Bears in 2012 but started 127 games for the Dallas Cowboys and Baltimore Ravens from 2002-11.